Binary package “lib64z1-dev” in ubuntu focal
compression library - 64 bit - DO NOT USE EXCEPT FOR PACKAGING
zlib is a library implementing the deflate compression method found
in gzip and PKZIP. This package includes the development support
files for building 64 bit applications.
.
This package should ONLY be used for building packages, users who do
not need to build packages should use multiarch to install the relevant
runtime.